Eisai Opens for Business in the Netherlands

Epilepsy Treatment Zonegran(R) First Commercially Available Product

HATFIELD, England, January 13, 2011 - Eisai Europe Limited, a subsidiary of Eisai Co., Ltd (Headquarters:
Tokyo; President and CEO: Haruo Naito) announces the establishment of its
sales and marketing operation in its wholly owned subsidiary in the
Netherlands based in Amsterdam. The first Eisai product on the Dutch market
is the epilepsy treatment Zonegran (zonisamide).

Commenting on the opening of the new subsidiary, Eisai Netherlands
Managing Director, Mr Gert-Jan Kouseband said: "Eisai's entry into the
Netherlands is aligned with the company's wider strategy of establishing a
solid foundation in Europe. We currently have one product on the market and
hope to have five products available in the coming months, boosting our
presence in the market. This will allow Dutch patients access to treatments
not previously available to them and further supports Eisai's human health
care (hhc) mission to satisfy unmet medical needs and contribute to the
health and well being of people worldwide."

The Dutch company's initial area of focus is epilepsy and a dedicated
Eisai team has already been established. Zonegran, an adjunctive treatment
for adult patients with partial seizures, with or without secondary
generalisation, is now available. It is estimated that 100,000 Dutch people
suffer from epilepsy[1] and the availability of Zonegran in the Netherlands
will provide an additional treatment option to help manage their condition.
Epilepsy is a key strategic area for Eisai in Europe and the company is
committed to developing and delivering highly beneficial new treatments to
help improve the lives of people with epilepsy.

Eisai's commitment to establish a strong European presence is further
seen by a GBP100m investment in the state-of-the art European headquartered
in Hatfield, UK, which opened in 2009. The European Knowledge Centre acts as
the hub for all of Eisai's European operations.

Notes to Editors

About Eisai Europe in Epilepsy

Eisai is committed to making further contributions to addressing the
diversified needs and improving quality of life of patients with epilepsy.
Eisai has three currently marketed treatments in Europe, these are:

    - Zonegran(R) (zonisamide)as adjunctive therapy in adult patients with
    partial-onset seizures, with or without secondary generalisation

    - Zebinix(R) (eslicarbazepine acetate) (under license from Bial - Portela
    & Ca, S.A in Europe) as adjunctive therapy in adult patients with
    partial-onset seizures, with or without secondary generalisation

    - Inovelon(R) (rufinamide) is an adjunctive treatment of seizures
    associated with Lennox-Gastaut Syndrome

About Eisai

Eisai is one of the world's leading R&D-based pharmaceutical companies,
that has defined its corporate mission as "giving first thought to patients
and their families and to increasing the benefits health care provides,"
which we call human health care (hhc).

Eisai concentrates its R&D activities in three key areas:

    - Integrative Neuroscience: Alzheimer's disease, multiple sclerosis,
    neuropathic pain, epilepsy, depression, etc

    - Integrative Oncology: Anticancer therapies; tumour regression, tumour
    suppression, antibodies, etc and Supportive cancer therapies; pain
    relief, nausea, etc

    - Vascular/Immunological Reaction: Acute coronary syndrome,
    atherothrombotic disease, sepsis, rheumatoid arthritis, psoriasis,
    Crohn's disease, etc

With operations in the U.S., Asia, Europe and its domestic home market of
Japan, we employ more than 10,000 people worldwide, and reported consolidated
sales of over GBP3.53 billion in FY2007, an increase of 8.9% year on year. In
Europe, Eisai undertakes sales and marketing operations in over 20 markets,
including the United Kingdom, France, Germany, Italy, Spain, Switzerland,
Sweden, Ireland, Austria, Denmark, Finland, Norway, Portugal, Iceland, Czech
Republic, Hungary, and Slovakia.

For further information please visit our web site www.eisai.co.jp

References

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[1] Epilepsy Institutes of the Netherlands Foundation (SEIN) General
Information Last accessed Jan 2011
www.sein.nl/sites/default/images/algemeen/EpilepsiecentrumSEIN_Engels_
def.pdf

(Due to the length of this URL, it may be necessary to copy and paste
this hyperlink into your Internet browser's URL address field. Remove the
space if one exists.)

Media Inquiries, Cressida Robson, Eisai Europe Ltd., cressida_robson at eisai.net, +44(0)7908-314-155; For further information please contact: Benjamyn Tan / Helen Swift, Tonic Life Communications, +44(0)20-7798-9262 / +44(0)20-7798-9900, benjamyn.tan at toniclc.com / helen.swift at toniclc.com; Eisai Europe Ltd - Cressida Robson: +44(0)845-676-5318